A kinetic study of the CF3CFHO2 + NO reaction and the dissociation of the CF3CFHO radical

The kinetics of the reaction of CF3CFHO2 radicals with NO was studied by flash photolysis—time-resolved mass spectrometry. From the kinetic growth rate of NO+2 molecular ions the rate coefficient of the reaction CF3CFHO2 + NO → CF3CFHO + NO2 was determined to be k = (1.31 ± 0.30) × 10−11 cm3 molecule−1 s−1 in the pressure range 12–25 Torr at 324 ± 1 K. Measurements of the total NO2 yield indicated that the CF3CFHO radicals were completely dissociated by CC bond scission on the 50 ms time scale of the experiments. The results are discussed in the context of atmospheric chemistry of HFC-134a.